Question 22 (Mandatory) (3 points)
INput/Output software layering is in the following order relative to the proximity to
hardware
device drivers, device-independent OS software, interrupt handlers, user-level
I/O software
interrupt handlers, device drivers, device-independent OS software, user-level
I/O software
user-level I/O software, interrupt handlers, device drivers, device-independent
OS software
interrupt handlers, device-independent OS software, device drivers, user-level
I/O software